Make a regex that matches
   Numbers with a decimal point.
   Three letter words with a vowel in the middle.
   The word "bacon" in upper or lower or mixed case.


Make an iFrame with *three* frames.
Clicking on the links in the middle frame changes the pics on the left frame.



Put a picture on the screen in the lower left corner.  It does not scroll.
Put a picture on the screen in the upper right corner.  It scrolls but stays 
on the screen.